Expandable Bags

Discover Knack's range of patented expandable bags, perfect for both travel as well as daily commuting. Our collection includes expandable backpacks in various sizes and colors. Whether you’re exploring the world or simply heading to work, a Knack expandable bag adapts to the needs of your day.

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Expandable Travel Bag Collection

Explore Knack’s' Expandable Travel Bag Collection, perfect for travel, work, and daily life. Each bag seamlessly transitions to an expandable travel bag from an everyday backpack, making it easy to adjust for bigger loads or pack for extended trips. Our expandable carry-on bags combine sleek, professional design with durable, water-resistant materials. Built with next-level organization pockets for tech, toiletries and accessories, Knack Bags are designed for modern professionals. Enjoy style, comfort, and adaptability in one smart, expandable bag.

Expandable Travel Bag Features

  • Series 2: Large Expandable Knack Pack Backpack Knack#color_midnight-black

    Expand Your Horizons

    Separate, patented, expandable suitcase compartment makes packing for travel easy by giving you 45% more carrying capacity. Easily access multiple changes of clothes with a convenient suitcase lid.

  • Business Trip Travel Set Series 2 Backpack Knack

    Stay Organized

    Keep all your gear secure and easy to find with next-level organization, including everything from fleece and mesh accessory pockets to a hidden side-zip water bottle pocket and a padded laptop pocket.

  • Be Compatible

    To make your travels easier, our hidden trolley sleeve lets you slip your Knack over the handle of almost all sizes of wheeled luggage.
Knack Backpacks Travel Everyday Commute Backpack

About Knack

Knack sprang from the simple observation that too many people were carrying too many bags at the same time. This aha moment spurred our passion to live a One Bag Life. So we pulled together a dedicated group of frequent travelers and bag enthusiasts––from Tumi, Coach, North Face, Samsonite, and eBags––to create the one bag that’s clever enough to replace two.

Check out these blogs:

  •  

    Best Backpack for Nurses & Medical Students

    Nurse and medical student Knackpackers share how they use their Knack Pack expandable backpacks to get out the door and go after their goals.

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  •  

    An Ultimate Guide To One Bag Business Travel

    As seasoned business travelers, we’re excited to share our top tips for carry-on only, one-bag business travel (plus, some business travel packing tips).

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  •  

    The Easy Approach to Packing a Suit in Your Backpack

    These tips and tricks on how to pack a suit in a backpack makes it a breeze to travel with more formal clothes

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